LISTS OF SPECIES BY STATIONS 



93 



Station 73 

 February 10, 1929; 10° 46' S, 84° 57' VV; bottom depth, 4670 m; 38 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, 0;'oo 

 X'olume of tow, cm^ 



50 ion Depth of tow, m 50 100 



25.2 18.7 14.7 Den^itv (<rt|.) 2.5.6 25.6 26.4 



35.4 35.3 34. y Hvdrogen-ion cone. (pH) 8.21 8.05 7.80 



36 32 32 Length of tow, miles 0.5 0.6 0.6 



Acartia danae 



Calanus minor 



propinquus 



Calocalanus pavo 



plumulosus 



styliremis 



Clytemnestra scutellata. 



Copilia quadrata 



Corycaeus crassiuscuhis. 



dubius 



furcifer 



pumilus 



robustus 



speciosus 



Eucalanus attenuatus. . . 



crassus 



elongatus 



inonachus 



Euchaeta marina 



Euchirella brevis 



curticauda 



Labidocera detruncata. . 

 Lucicutia flavicornis. . . . 



longicornis 



Macrosetclla gracilis. . . . 



Mecyiiocera clausi 



Microsetella rosea 



Oithona attenuata 



plumifcra 



similis 



Oncaea curta 



media 



minuta 



\enusta 



Paracalanus parvus 



Pseudocalanus minutus. 

 Sapphirina auronitens. . 

 Temora discaudata 



The high surface temperature fell 10?5 in 100 meters. The 

 salinity remained high and constant, and the hydrogen-ion 

 concentration diminished slightl\'. Eight species were present 

 at the surface, 19 in the 50-meter tow, and 31 in the 100- 

 meter tow. Twent\' species (52 per cent) were confined to a 

 single tow and only 3 were present in ail three tows. Eucalanus 



was again conspicuous in the two deeper tows, but none of 

 the 4 species appeared at the surface, and the same was true 

 for the 3 species of Oithona. Although 1 species of Oncaea 

 was restricted to the surface, the other 3 species were much 

 more abundant in the deeper tows. Euchirella and Lucicutia 

 were whollv confined to the 100-meter tow. 



